Thaum lub sij hawm ntawm - qhov chaw vuam ntawm cov kav dej insulated, cov polyurethane ua npuas ncauj ntawm cov yeeb nkab steel kawg yog nyob ze rau qhov sib koom ua ke. Muab qhov kub thiab txias ntawm qhov vuam arc, cov npuas dej yuav raug hlawv lossis carbonization yog tias tsis muaj kev tiv thaiv, uas ncaj qha cuam tshuam qhov zoo ntawm cov rwb thaiv tsev sib koom.
Txoj kev daws teeb meem yooj yim tshaj plaws yog txhawm rau txhim kho cov ntaub thaiv npog ntawm ob sab ntawm qhov chaw vuam. Ib txoj hauv kev yog txhim kho cov ntaub thaiv npog ntawm ob sab ntawm qhov sib txuas; cov no yog manually tig raws li welding zuj zus los xyuas kom meej lawv tsis tu ncua tiv thaiv thiab tiv thaiv lub rwb thaiv tsev txheej. Cov ntaub thaiv npog no tuaj yeem ua los ntawm cov hlau thiab ntsia dej ntws tawm ntawm cov phab ntsa sab hauv ntawm lub qhov rooj sab nrauv, cais cov npuas dej los ntawm kev sib koom ua ke.
Qhov sib txuas ntawm vuam kuj tseem ceeb heev. Nws feem ntau pom zoo kom ua kom tiav cov yeeb nkab steel taub qab vuam ua ntej ua haujlwm rwb thaiv tsev ntawm qhov sib koom ua ke. Vuam generates concentrated cua sov nyob ze ntawm qhov sib koom ua ke; Yog hais tias rwb thaiv tsev yog siv ua ntej vuam, lub npuas yuav inevitably shrinkage los yog carbonize vim cua sov. Los ntawm vuam ua ntej thiab insulating tom qab, cov npuas dej tsis ncaj qha mus rau qhov kub thiab txias.
Kev saib xyuas kuj yuav tsum tau them rau kev tiv thaiv lub kaus mom tsis muaj dej thaum lub sijhawm vuam. Cov kaus mom no tiv thaiv cov npuas dej ntawm cov yeeb nkab kawg thaum thauj thiab khaws cia; Yog tias lawv raug hlawv lossis raug tshem tawm thaum lub sijhawm vuam, cov dej nag thiab cov khib nyiab tuaj yeem nkag mus rau hauv cov yeeb nkab kawg. Cov kev tiv thaiv muaj xws li tshem tawm lub kaus mom ib ntus ua ntej vuam thiab rov nruab lawv tom qab, lossis npog cov yeeb nkab nrog cov ntaub asbestos thaum lub sij hawm vuam.
Kev npaj kom zoo ntawm weld bevel thiab tswj cov vuam tsis yog qhov tseem ceeb sib npaug. Ntau dhau welding tam sim no lossis lub sijhawm ua kom muaj cua sov ntau dua, ua rau muaj kev cuam tshuam rau cov npuas dej ib puag ncig. Ua raws li cov txheej txheem vuam tsis ua kom cov vuam zoo thaum txo qis thermal puas rau cov npuas dej.
Tom qab vuam tab sis ua ntej siv cov rwb thaiv tsev sib koom ua npuas dej, cov npuas dej ntawm cov yeeb nkab kawg yuav tsum tau kuaj xyuas qhov kev puas tsuaj. Yog tias scorching lossis carbonization raug kuaj pom ntawm cov npuas dej, cov chaw puas yuav tsum tau muab ntxuav kom huv si kom muaj kev sib raug zoo ntawm cov rwb thaiv tsev tshiab thiab cov npuas dej uas twb muaj lawm. Qhov xwm txheej ntawm cov npuas dej ntawm cov yeeb nkab xaus ncaj qha txiav txim siab qhov zoo ntawm cov rwb thaiv tsev ntawm qhov sib koom ua ke.